Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a4a129e95385af…

MALICIOUS

PDF

44.5 KB Created: 2021-05-18 23:45:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5c05c22fde79d476a393dcaacd14661d SHA-1: bfb64144c286d5af872978eeafda4566bed1949f SHA-256: d9a4a129e95385afcac76eeb3428ebeaaff411757854ebd442237860e2dd2f82
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link to a 'free generator / game hack' which is a common lure for users seeking cheats or exploits. The ML classifier strongly indicated maliciousness, and the presence of multiple embedded URLs further supports a malicious intent, likely to redirect users to a site that may host further malware or phishing content. No scripts were extracted from this sample, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/835599320/tiktok-free-real-likes-game-hack PDF link annotation
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/login-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://e-learning.man1majalengka.sch.id/__statics/gudangsoal/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A19 25272 bytes
SHA-256: dcd562778f0e6e485210ba6da7cf79b665386e625c885e753deca7c59d4170a3
font_01_sfnt_off000082e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E2 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF2 17756 bytes
SHA-256: cff5292e1ec8dcb61f635214f054301a4d4e1a0a117dbd2882ed52fce59b4cde

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